47
Response FF80
- Installation
SERVICING
1.
Isolate the electrical supply. Refer to
Frame 55.
2.
Remove the boiler bottom panel .
3.
Remove the controls panel. Swing the
panel upside down and fix with the long
screws. If programmer is fitted, it is
necessary to disconnect the programmer
harness at the terminal block.
4.
Close the cock on the HW inlet pipe
below the boiler.
5.
Drain down. Refer to Frame 52.
6.
Disconnect the flow switch electrical lead
at the in line connector.
7.
Undo the knurled fixing nut and withdraw
the flow switch.
8.
Fit the new flow switch, ensuring that the
locating pin and hole are correctly
positioned.
9.
Complete the reassembly in reverse
76 MAINS TRANSFORMER REPLACEMENT
1.
Isolate the electrical supply to the boiler. Refer to
Frame 55.
2.
Remove the boiler front panel. Refer to Frame
48.
3.
Release the screws securing the PCB cover and
remove the cover.
Locate the leads from the transformer to PCB 38
and disconnect the white 'Molex' connector from
the PCB.
4.
Release the transformer mounting screws.
5.
Fit the replacement transformer and complete the
reassembly in reverse order.
order.
10.
Open the isolating valve and bleed
air out at the tap(s).
11.
Reconnect the electrical supply
and open a HW tap to test
operation of the boiler.
SER
VICING
75 WATER FLOW SWITCH REPLACEMENT
